CN105111827A - Preparation method of rainbow silver paste - Google Patents
Preparation method of rainbow silver paste Download PDFInfo
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- CN105111827A CN105111827A CN201510527210.0A CN201510527210A CN105111827A CN 105111827 A CN105111827 A CN 105111827A CN 201510527210 A CN201510527210 A CN 201510527210A CN 105111827 A CN105111827 A CN 105111827A
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Abstract
The invention relates to a preparation method of a rainbow silver paste, which comprises the following steps: sequentially coating a release layer and an information layer on a PET (polyethylene terephthalate) film, carrying out die pressing, aluminizing, peeling the release layer from the PET film, cleaning the peeled substance, and pulverizing to obtain the rainbow silver paste. Compared with the prior art, the rainbow aluminum paste prepared by the technique has the seven-color effect and the function of changing colors along with the angle, and has the advantages of abundant and full color and low cost.
Description
Technical field
The present invention relates to a kind of coating, be specifically related to the preparation method of rainbow silver slurry.
Background technology
The aluminium paste be made up of flake aluminum and solvent, of a great variety, can show silver color and chromatic metallic gloss, owing to having the features such as the effective and light durable of luminous reflectance, in the field such as ink, coating, application is very extensive.
Rainbow aluminium paste, on the basis of common flake aluminum, gives fantasy coloured effect, can schillerization rainbow seven color effect of dazzling the eyes under high light, has decoration, the multiple use such as false proof.
Aluminium paste adopts ball milled to produce usually.Be raw material with ball aluminum powder, become flake aluminum by wet ball grinding, then obtain aluminium paste by processes such as classification, filtration, chemical mechanical polishings.The aluminium paste of this explained hereafter has the following disadvantages: one be color and luster is single silver color; Two is the easily oxidations and dimmedly even to turn black of aluminium powder surface; Two is that powder sheet thickness is large, is difficult to prepare the powder sheet of thickness only tens nanometers; Three is aluminium powder uneven thickness, powder sheet surface irregularity, and surface and edge scattering of light and diffuse-reflectance seriously, affect the brightness of aluminium paste, color and luster and metal sense; Four is that water surface covering force is low, and unit undertakes the printing of, coating area consumption is large.
Chinese patent CN201210105500.2 discloses a kind of preparation method of radium-shine aluminium paste, comprise the steps: the high-purity aluminium lamination of vacuum evaporation on a plastic film, form aluminium plating film, then at high temperature laser molding plate is pressed on aluminium plating film, obtain citicall limited aluminium film, recycling laser cutting technique pulverizes citicall limited aluminium film, the radium-shine flake aluminum obtained is mixed with lipid acid, organic solvent, at a certain temperature coating modification is carried out to radium-shine flake aluminum, finally add a small amount of additive, obtained radium-shine aluminium paste.This patent is the direct high-purity aluminium lamination of vacuum evaporation on a plastic film, forms aluminium plating film, then carries out mold pressing, the step such as radium-shine obtains product, being inevitably produce scuffing, affecting its effect carrying out stripping.
Summary of the invention
The object of the present invention is to provide a kind of is raw material with plastics film, produce rainbow fantasy coloured effect, then aluminium plating film is protected, and then peels off coating, cutting and grinding, prepares the method that aluminium paste penetrated by anchor by vacuum aluminum-coated, mold pressing.
Object of the present invention can be achieved through the following technical solutions: a kind of preparation method of rainbow silver slurry, it is characterized in that, the method comprises the following steps: be coated with release layer and information layer successively on a pet film, then mold pressing is carried out, aluminize again, stripped down from PET film by release layer, overburden carries out cleaning, pulverize and obtain rainbow silver slurry.
Described release layer is adopt nitro-cotton and CAP by weight 1:(0.1 ~ 2) be dissolved in organic solvent gained slurry after mixing and carry out being coated with the coating formed, the solid content of described slurry is 1 ~ 10%.
Described organic solvent comprises ethyl ester, butyl ester, ritalin, vinyl acetic monomer or propyl acetate.
The release layer that the present invention adopts is special formulation, and wherein, nitro-cotton is white or micro-yellow flocculence, and in the molecule of cellulose acetate butyrate CAB, hydroxyl-removal, ethanoyl are outward also containing butyryl radicals, and its performance is relevant with the content of three kinds of groups.Fusing point and tensile strength increase with acetyl content and become large, reduce within the specific limits with the consistency of softening agent and the flexibility of film and increase with acetyl content.Hydroxy radical content increases the solubleness promoting it in polar solvent.The increase of butyryl radicals content then makes its density reduce, and soluble end expands.The CAB melt temperature 140 DEG C that the present invention adopts, density 1.15 ~ 1.22g/cm
3, tensile strength 14 ~ 52MPa, modulus in flexure 621 ~ 2070MPa, Izod notched impact strength 53 ~ 580J/m, Rockwell hardness R31 ~ 116, heat-drawn wire 45 ~ 94 DEG C.
Above-mentioned two kinds of components are carried out in specific proportions the release layer be mixed, peeling effect is good on the one hand, can not have an impact to information layer, is conducive to the expansion of down-stream on the other hand.
Described information layer adopts acrylic resin and nitro-cotton by weight 1:(0.1 ~ 2) slurry that is dissolved in organic solvent gained after mixing carries out being coated with the coating formed, and the solid content of described slurry is 20 ~ 30%.
The acrylic resin of the specified proportion that described information layer adopts and nitro-cotton mix, wherein, acrylic resin is thermosetting acrylic resin or thermoplastic acrylic resin, reacts with nitro-cotton, the information layer obtained, when mold pressing, high precision can obtain mold pressing information, and, with the excellent bonding performance of degree aluminium lamination, can information completely be transferred on aluminium coated, obtain the rainbow silver slurry that glossiness is saturated.
Described mold pressing is hard pressure, namely below the glass temperature range of information layer, by moulded board pressure on an information layer, make information layer is formed be uneven, refraction of light not of uniform size point.
Information layer after molding adopts vacuum aluminizing method, plates the aluminium coated that thickness is 400 ~ 500 ǎ.
The aluminium of described vacuum aluminum-coated employing is the rafifinal that purity is greater than 99.99%, and vacuum tightness is 10
-2~ 10
-4.
The temperature of described mold pressing is 165 ~ 220 DEG C.
Compared with prior art, the present invention has the following advantages:
1. the rainbow aluminium paste prepared of technique of the present invention, have seven color effects and changeable colors along with angle function, its color and luster enriches full;
2. the rainbow aluminium paste prepared of technique of the present invention, its aluminium powder surfacing is smooth, and thickness is even, and thickness is within the scope of 400 ~ 500 ǎ, like this its surface and edge scattering of light and diffuse-reflectance not serious, thus ensure that the brightness of aluminium paste, color and luster and metal sense;
3. the radium-shine aluminium paste prepared of technique of the present invention, its aluminium powder surface oxidation seldom and not sedimentation substantially, its steady quality;
4. the present invention adopts special release layer and information layer to be transferred on aluminium coated by information, the smoothness of product, wear resistance, glossiness, printing adaptability all improves significantly, PET film is through accepting peel ply coating and information layer coating, define very high surface gloss, make the aluminium coated of finished product of the present invention can be thinned to 400 ~ 500 ǎ, thus cut down the consumption of raw materials, reduce expending of Energy resources, greatly reduce costs.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
A kind of preparation method of rainbow silver slurry, the method comprises the following steps: be coated with release layer and information layer successively on a pet film, at 200 DEG C, by moulded board pressure on an information layer, make on information layer formed be uneven, refraction of light not of uniform size point, the rafifinal adopting purity to be greater than 99.99% again carries out vacuum aluminum-coated, and vacuum tightness is 10
-2~ 10
-4, carrying out aluminizes obtains the aluminium coated that thickness is 400 ~ 500 ǎ, is stripped down by release layer from PET film, and overburden carries out cleaning, pulverize and obtain rainbow silver slurry.
Wherein, described release layer is adopt nitro-cotton and CAP to be dissolved in organic solvent gained slurry after 1:1 mixing to carry out being coated with the coating formed, and the solid content of described slurry is 5%.Described organic solvent comprises ethyl ester, butyl ester, ritalin, vinyl acetic monomer or propyl acetate.
The slurry that described information layer adopts acrylic resin and nitro-cotton to be dissolved in organic solvent gained after 1:0.3 mixing carries out being coated with the coating formed, and the solid content of described slurry is 30%.
Embodiment 2
A kind of preparation method of rainbow silver slurry, the method comprises the following steps: be coated with release layer and information layer successively on a pet film, at 165 DEG C, by moulded board pressure on an information layer, make on information layer formed be uneven, refraction of light not of uniform size point, the rafifinal adopting purity to be greater than 99.99% again carries out vacuum aluminum-coated, and vacuum tightness is 10
-2~ 10
-4, carrying out aluminizes obtains the aluminium coated that thickness is 400 ~ 500 ǎ, is stripped down by release layer from PET film, and overburden carries out cleaning, pulverize and obtain rainbow silver slurry.
Wherein, described release layer is adopt nitro-cotton and CAP to be dissolved in organic solvent gained slurry after 1:0.2 mixing to carry out being coated with the coating formed, and the solid content of described slurry is 1%.Described organic solvent comprises ethyl ester, butyl ester, ritalin, vinyl acetic monomer or propyl acetate.
The slurry that described information layer adopts acrylic resin and nitro-cotton to be dissolved in organic solvent gained after 1:0.2 mixing carries out being coated with the coating formed, and the solid content of described slurry is 25%.
Embodiment 3
A kind of preparation method of rainbow silver slurry, the method comprises the following steps: be coated with release layer and information layer successively on a pet film, at 220 DEG C, by moulded board pressure on an information layer, make on information layer formed be uneven, refraction of light not of uniform size point, the rafifinal adopting purity to be greater than 99.99% again carries out vacuum aluminum-coated, and vacuum tightness is 10
-2~ 10
-4, carrying out aluminizes obtains the aluminium coated that thickness is 400 ~ 500 ǎ, is stripped down by release layer from PET film, and overburden carries out cleaning, pulverize and obtain rainbow silver slurry.
Wherein, described release layer is adopt nitro-cotton and CAP to be dissolved in organic solvent gained slurry after 1:2 mixing to carry out being coated with the coating formed, and the solid content of described slurry is 10%.Described organic solvent comprises ethyl ester, butyl ester, ritalin, vinyl acetic monomer or propyl acetate.
The slurry that described information layer adopts acrylic resin and nitro-cotton to be dissolved in organic solvent gained after 1:2 mixing carries out being coated with the coating formed, and the solid content of described slurry is 20%.
The performance of above-described embodiment gained rainbow silver slurry is as follows:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Basic weight g/m 2 | 72 | 72.5 | 73.3 |
| Mirror surface luster/degree | 805 | 876 | 827 |
| Longitudinal strength n/15mm time dry | 74 | 72.8 | 76.1 |
| Transverse strength n/15mm time dry | 58.9 | 61.5 | 60.7 |
| Longitudinal strength n/15mm time moist | 18.9 | 20.2 | 19.6 |
| Transverse strength n/15mm time moist | 15.2 | 15.8 | 15.5 |
| Water angularity/second | 10 | 12 | 15 |
| Sticking power/level | 2 | 2 | 2 |
| Water ratio % | 4.5 | 4.4 | 4.8 |
| Surface tension/dyne | 42 | 42 | 42 |
。
Claims (8)
1. a preparation method for rainbow silver slurry, it is characterized in that, the method comprises the following steps: be coated with release layer and information layer successively on a pet film, then mold pressing is carried out, aluminize, stripped down by release layer from PET film, overburden carries out cleaning, pulverize and obtain rainbow silver slurry.
2. the preparation method of rainbow silver slurry according to claim 1, it is characterized in that, described release layer is adopt nitro-cotton and CAP by weight 1:(0.1 ~ 2) be dissolved in organic solvent gained slurry after mixing and carry out being coated with the coating formed, the solid content of described slurry is 1 ~ 10%.
3. the preparation method of rainbow silver slurry according to claim 2, it is characterized in that, described organic solvent comprises ethyl ester, butyl ester, ritalin, vinyl acetic monomer or propyl acetate.
4. the preparation method of rainbow silver slurry according to claim 1, it is characterized in that, described information layer adopts acrylic resin and nitro-cotton by weight 1:(0.1 ~ 2) slurry that is dissolved in organic solvent gained after mixing carries out being coated with the coating formed, and the solid content of described slurry is 20 ~ 30%.
5. the preparation method of rainbow silver slurry according to claim 1, it is characterized in that, described mold pressing is hard pressure, namely below the glass temperature range of information layer, by moulded board pressure on an information layer, make on information layer formed be uneven, refraction of light not of uniform size point.
6. according to claim 1 or 5 rainbow silver slurry preparation method, it is characterized in that, information layer after molding adopts vacuum aluminizing method, plate the aluminium coated that thickness is 400 ~ 500 ǎ.
7. the preparation method of rainbow silver slurry according to claim 6, it is characterized in that, the aluminium of described vacuum aluminum-coated employing is the rafifinal that purity is greater than 99.99%, and vacuum tightness is 10
-2~ 10
-4.
8. the preparation method of rainbow silver slurry according to claim 1, it is characterized in that, the temperature of described mold pressing is 165 ~ 220 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294311A (en) * | 2018-09-12 | 2019-02-01 | 电子科技大学中山学院 | Zinc sulfide rainbow pulp pigment, pigment manufacturing method and transparent laser paint film manufacturing method |
| CN111055615A (en) * | 2019-12-04 | 2020-04-24 | 中丰田光电科技(珠海)有限公司 | Modified glitter laser powder manufacturing process |
| CN112342579A (en) * | 2020-10-16 | 2021-02-09 | 浙江大学 | Oxide and pigment-free colored aluminum powder and preparation method thereof |
| CN113004720A (en) * | 2021-03-01 | 2021-06-22 | 安徽天易金属新材料有限公司 | Super-bright color aluminum pigment and preparation method thereof |
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| EP2371537A1 (en) * | 2008-12-03 | 2011-10-05 | Nippon Steel Corporation | Coated metallic material, and method for producing same |
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| CN101619175A (en) * | 2008-07-01 | 2010-01-06 | 上海宏盾防伪材料有限公司 | Laser pigment and preparation method thereof |
| EP2371537A1 (en) * | 2008-12-03 | 2011-10-05 | Nippon Steel Corporation | Coated metallic material, and method for producing same |
| CN102558972A (en) * | 2011-12-23 | 2012-07-11 | 北京高盟新材料股份有限公司 | Aluminum transferring coating composition suitable for multiple stripping and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109294311A (en) * | 2018-09-12 | 2019-02-01 | 电子科技大学中山学院 | Zinc sulfide rainbow pulp pigment, pigment manufacturing method and transparent laser paint film manufacturing method |
| CN111055615A (en) * | 2019-12-04 | 2020-04-24 | 中丰田光电科技(珠海)有限公司 | Modified glitter laser powder manufacturing process |
| CN112342579A (en) * | 2020-10-16 | 2021-02-09 | 浙江大学 | Oxide and pigment-free colored aluminum powder and preparation method thereof |
| CN113004720A (en) * | 2021-03-01 | 2021-06-22 | 安徽天易金属新材料有限公司 | Super-bright color aluminum pigment and preparation method thereof |
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| CN105111827B (en) | 2018-03-02 |
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